Although he was on the front line, the feathered clothes were basically lightweight.

He had nothing to bring.

First, he added some ninja tools, including Kanna, Shuriken and other things.

Second, he brought a bag of military food pills, which is a must-have medicine for murder and setting fire when traveling at home.

Third, he bought a black cloak, not to show off his coolness, because on the battlefield, being able to hide his hands is crucial for a ninja. Most of the time when a ninja attacks is to make seals. If he can hide his hands, he can hide his offensive motivation to a certain extent.

Fourth, he prepared a white mask for himself. This has nothing to do with Anbe. He did not live like an outer Anbe ninja, but when he felt necessary, the ninja should hide his face. Haki Kakashi did a particularly outstanding job in this regard. Ninjas in the same village didn't know what he looked like.

One morning, almost forty people in this group began to leave Konoha and move towards the front line of the Sakai.

In terms of daily ninja movements, the scale of forty people is huge enough. After all, most of the time, ninjas are carried out in a four-person team.

Because of the existence of medical ninjas with weak physical strength, the team's movement speed was not very fast. It took almost six days before they arrived at the border of the Kingdom of Fire.

"Sir Kushina, we will improve our alert level next. From the perspective of the region, we have entered the war zone. We may encounter small Sand Ninjas that penetrate in at any time."

On the evening of that day, while the team was busy setting up camp, the leader of Anbu came to Kushina and reminded him.

Kushina nodded and said nothing. Don’t look at her carefreeness, but she really thinks she knows nothing about war. In fact, when she was young, she personally experienced the destruction of Umeno Country. She knew the cruelty of the war clearly.

At this time, the Konoha Front Command and Base Camp, which were set up on the border between the Kingdom of Fire and the Kingdom of Kawa, was still 200 kilometers away, and the front line of the battle was only 250 kilometers away. The small troops of the Sand Ninja were completely able to bypass Konoha's defense and infiltrate and destroy the Kingdom of Fire.

Logically, they should go to the command center as soon as possible, but due to some ninjas' physical fitness problems, they must rest here for one night tonight.

That's why Anbe Ninja came to remind Kushina to stay alert.

As they got closer and closer to the fierce battle zone, most of the team began to get nervous, but most of them did not include Yuyi.

Even he himself didn't know why he showed extraordinary adaptability to war.

At this time, although he was also listening to the reminder of Anbe Ninja beside Kushina, his face was filled with an indifferent expression.

The tent where Kushina is located is her special treatment. As a disciple, Yuyi can also benefit from it, so she won’t let him huddle with those Anbe ninjas at night.

After Anbe Ninja left the tent, he took out a small scroll and began to write and draw on it.

Kushina glanced curiously and asked:

"Is this an improvement of the seal of the four symbols?"

Yes, Yuyi is a person who can't stay idle. At this time, he is trying to improve the Four Symbol Seal Technique again.

"Yes," Yuyi nodded, and then continued: "The Four Symbol Seal Technique is undoubtedly the most powerful sealing technique, but the problem is that it is too powerful and consumes too chakra. This is secondarily. Its biggest flaw is that the scope of action is too wide, and it is easy to kill the caster together, so I hope it can change its scope of action to a smaller one."

How long has it been since Yuyi started to learn sealing techniques? At this time, he actually began to try to change the S-level forbidden technique!

Kushina's first reaction was to ban it. After all, developing and improving ninjutsu is an extremely dangerous task, not to mention the most complex sealing technique among various techniques. If it is a mistake, it is likely that not only Yuyi himself, but also dozens of people will be finished.

But after she saw the detailed arguments and techniques on the scroll, she was a little hesitant. As the Uzumaki clan, Kushina herself is an expert in sealing techniques. Hashii has done some work. She did not find any mistakes or omissions, which shows that he is on the road to correct and successful, which makes her unable to make up her mind for the time being.

Looking at Kushina's hesitant face, Yuyi certainly knew what she was thinking about, so she quickly said, "Safe, Kushina, I'm just conducting arguments and will not conduct experiments at will. I'm not so afraid of death."

When Kushina heard what Yuyi said, she felt relieved, but she still said seriously: "I agree with your research work, but I must obtain my consent before any improvement test. I must be present at that time, otherwise you cannot do any test, do you understand?"

"I understand, absolutely understand."

Yuyi quickly said, he knew he was a good person. After all, in the ninja world, there is a saying that says cherishing life and staying away from madmen who like to develop forbidden techniques...

As the night gradually deepened, the bonfires in the camp went out, the medical ninjas had already rested, and the Anbu only left a team to watch.

However, although there was no bright light source, Yuyi walked out of the tent, and he was still performing sealing techniques under the moonlight.

The moonlight today is very bright.

As time goes by, Kushina has fallen asleep.

But suddenly, the pen in Yuyi's hand stopped, and his brows frowned unconsciously... This was not because he encountered any problem in his deduction, but because he found that someone was quietly approaching the camp.

enemy!

Unexpectedly, an enemy appeared just after nightfall.

Because it is still in the territory of Fire, Yuyi and others' camp did not cover it too deliberately. If the enemy can discover this camp, it would not be a strange thing.

Yuyi stood up and put the pen and scroll back into her ninja bag.

Anbe Ninja, who was on duty, noticed the movements of Haei.

He did not speak, but made a gesture and secret code to Yuyi.

"What's wrong? Is something going on?"

One of Yuyi's hand stretched out from the cloak, and then quickly changed his gesture: "At the six o'clock direction, four enemy targets were found in the woods four hundred meters away."
Chapter completed!